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A group of Hungarian modders (tlac and ko9 prohardver.hu user) have modified the program for extracting the boot.img (boot binary) for Grand X In. I have just modified the program to (may) work with Xolo x900. Unfortunately we don't have config file either, but the Xolo kernel is closer to the Grand X In, than the Motorola Razr I, because we got adb working with it and we were able to create dmesg log. Maybe if there would be a source code for Xolo that is capable of booting, it would be easier to port it to Grand X In. Grand X In have open bootloader, and we have "custom" kernel (unsecured "boot.img" (boot.bin) )

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I haven't got the Lava Xolo x900, only a ZTE Grand X In, but in this phone, the bootloader is fully unlocked, so I think it doesn't need any signing key.

Ah you are lucky then. Sadly we do not have the kernel source and the kernels for the phone have been build without saving the config file so we cannot extract it from the kernel because it doesn't exist :(

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Ah you are lucky then. Sadly we do not have the kernel source and the kernels for the phone have been build without saving the config file so we cannot extract it from the kernel because it doesn't exist :(

that's why I need to determine kernel config from current running kernel stats on XOLO X900,

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Need to make some modification to kernel to make charging and USB OTG work simultaneously,

while the biggest problem is the locked bootloader, for now we still can't flash unsigned boot image to XOLO X900

And runtime kernel switch (kexec) still hungs the phone

I didn't get any I/O errors while reading from or writing to SSD. SSD always required to be externally powered to work even with PC and I used the same USB Y cable I use with powered hub/power pack to connect SSD to Xolo. It worked perfectly.

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It still won't allow custom roms in the traditional sense. We have no way to run an alternative recovery and the phone won't boot an unsigned OS anyway.

Anyway for those looking at kexec.. have a look at the widi directory in system. There is another kernel in there.. I assume enabling wireless direct causes kexec to load this kernel?? (It's all beyond me)

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current stocking kernel does support loop, I already made full Ubuntu works via HDMI output (with external USB display adapter)

Could you do a guide for how you got ubuntu working please ? I tried to do this with ubuntu installer app from market and it would not work as it is setup for Arm not X86, I originally thought it was no loop support, so that is good news that it is there.

Be good if we could have IP tables for firewall, but our kernel does not have this support :(